hwc_utils.cpp revision e4f3f721b557c12832be8492c62e76acfa1579eb 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 * Copyright (C) 2012, The Linux Foundation All rights reserved.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 *      http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18#include <EGL/egl.h>
19#include <overlay.h>
20#include <cutils/properties.h>
21#include <gralloc_priv.h>
22#include <fb_priv.h>
23#include "hwc_utils.h"
24#include "mdp_version.h"
25#include "hwc_video.h"
26#include "external.h"
27#include "hwc_mdpcomp.h"
28#include "QService.h"
29
30namespace qhwc {
31
32// Opens Framebuffer device
33static void openFramebufferDevice(hwc_context_t *ctx)
34{
35    hw_module_t const *module;
36    if (hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module) == 0) {
37        framebuffer_open(module, &(ctx->mFbDev));
38        private_module_t* m = reinterpret_cast<private_module_t*>(
39                ctx->mFbDev->common.module);
40        //xres, yres may not be 32 aligned
41        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres = m->info.xres;
42        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].yres = m->info.yres;
43        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xdpi = ctx->mFbDev->xdpi;
44        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].ydpi = ctx->mFbDev->ydpi;
45        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].vsync_period =
46                1000000000l / ctx->mFbDev->fps;
47        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd = openFb(HWC_DISPLAY_PRIMARY);
48    }
49}
50
51static void onExtDisconnect(const hwc_context_t::Callbacks& priv_proc) {
52    hwc_context_t *ctx = priv_proc.ctx;
53    overlay::Overlay& ov = *(ctx->mOverlay[HWC_DISPLAY_EXTERNAL]);
54    // Set overlay state
55    ov.setState(ovutils::OV_CLOSED);
56}
57
58void initContext(hwc_context_t *ctx)
59{
60    openFramebufferDevice(ctx);
61    overlay::Overlay::initOverlay();
62    for(uint32_t i = 0; i < HWC_NUM_DISPLAY_TYPES; i++) {
63        ctx->mOverlay[i] = overlay::Overlay::getInstance(i);
64    }
65    ctx->mQService = qService::QService::getInstance(ctx);
66    ctx->mMDP.version = qdutils::MDPVersion::getInstance().getMDPVersion();
67    ctx->mMDP.hasOverlay = qdutils::MDPVersion::getInstance().hasOverlay();
68    ctx->mMDP.panel = qdutils::MDPVersion::getInstance().getPanelType();
69    ctx->mExtDisplay = new ExternalDisplay(ctx);
70    MDPComp::init(ctx);
71
72    pthread_mutex_init(&(ctx->vstate.lock), NULL);
73    pthread_cond_init(&(ctx->vstate.cond), NULL);
74    ctx->vstate.enable = false;
75
76    ctx->priv_proc.onExtDisconnect = onExtDisconnect;
77    ctx->priv_proc.ctx = ctx;
78
79    ALOGI("Initializing Qualcomm Hardware Composer");
80    ALOGI("MDP version: %d", ctx->mMDP.version);
81}
82
83void closeContext(hwc_context_t *ctx)
84{
85    for(uint32_t i = 0; i < HWC_NUM_DISPLAY_TYPES; i++) {
86        if(ctx->mOverlay[i]) {
87            delete ctx->mOverlay[i];
88            ctx->mOverlay[i] = NULL;
89        }
90    }
91
92    if(ctx->mFbDev) {
93        framebuffer_close(ctx->mFbDev);
94        ctx->mFbDev = NULL;
95        close(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd);
96        ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd = -1;
97    }
98
99    if(ctx->mExtDisplay) {
100        delete ctx->mExtDisplay;
101        ctx->mExtDisplay = NULL;
102    }
103
104    pthread_mutex_destroy(&(ctx->vstate.lock));
105    pthread_cond_destroy(&(ctx->vstate.cond));
106
107}
108
109void dumpLayer(hwc_layer_1_t const* l)
110{
111    ALOGD("\ttype=%d, flags=%08x, handle=%p, tr=%02x, blend=%04x, {%d,%d,%d,%d}"
112          ", {%d,%d,%d,%d}",
113          l->compositionType, l->flags, l->handle, l->transform, l->blending,
114          l->sourceCrop.left,
115          l->sourceCrop.top,
116          l->sourceCrop.right,
117          l->sourceCrop.bottom,
118          l->displayFrame.left,
119          l->displayFrame.top,
120          l->displayFrame.right,
121          l->displayFrame.bottom);
122}
123
124void setListStats(hwc_context_t *ctx,
125        const hwc_display_contents_1_t *list, int dpy) {
126
127    ctx->listStats[dpy].numAppLayers = list->numHwLayers - 1;
128    ctx->listStats[dpy].fbLayerIndex = list->numHwLayers - 1;
129    ctx->listStats[dpy].yuvCount = 0;
130    ctx->listStats[dpy].yuvIndex = -1;
131    ctx->listStats[dpy].skipCount = 0;
132
133    for (size_t i = 0; i < list->numHwLayers; i++) {
134        private_handle_t *hnd =
135            (private_handle_t *)list->hwLayers[i].handle;
136
137        if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
138            continue;
139        //We disregard FB being skip for now! so the else if
140        } else if (isSkipLayer(&list->hwLayers[i])) {
141            ctx->listStats[dpy].skipCount++;
142        }
143
144        if (UNLIKELY(isYuvBuffer(hnd))) {
145            ctx->listStats[dpy].yuvCount++;
146            ctx->listStats[dpy].yuvIndex = i;
147        }
148    }
149}
150
151//Crops source buffer against destination and FB boundaries
152void calculate_crop_rects(hwc_rect_t& crop, hwc_rect_t& dst,
153        const int fbWidth, const int fbHeight) {
154
155    int& crop_x = crop.left;
156    int& crop_y = crop.top;
157    int& crop_r = crop.right;
158    int& crop_b = crop.bottom;
159    int crop_w = crop.right - crop.left;
160    int crop_h = crop.bottom - crop.top;
161
162    int& dst_x = dst.left;
163    int& dst_y = dst.top;
164    int& dst_r = dst.right;
165    int& dst_b = dst.bottom;
166    int dst_w = dst.right - dst.left;
167    int dst_h = dst.bottom - dst.top;
168
169    if(dst_x < 0) {
170        float scale_x =  crop_w * 1.0f / dst_w;
171        float diff_factor = (scale_x * abs(dst_x));
172        crop_x = crop_x + (int)diff_factor;
173        crop_w = crop_r - crop_x;
174
175        dst_x = 0;
176        dst_w = dst_r - dst_x;;
177    }
178    if(dst_r > fbWidth) {
179        float scale_x = crop_w * 1.0f / dst_w;
180        float diff_factor = scale_x * (dst_r - fbWidth);
181        crop_r = crop_r - diff_factor;
182        crop_w = crop_r - crop_x;
183
184        dst_r = fbWidth;
185        dst_w = dst_r - dst_x;
186    }
187    if(dst_y < 0) {
188        float scale_y = crop_h * 1.0f / dst_h;
189        float diff_factor = scale_y * abs(dst_y);
190        crop_y = crop_y + diff_factor;
191        crop_h = crop_b - crop_y;
192
193        dst_y = 0;
194        dst_h = dst_b - dst_y;
195    }
196    if(dst_b > fbHeight) {
197        float scale_y = crop_h * 1.0f / dst_h;
198        float diff_factor = scale_y * (dst_b - fbHeight);
199        crop_b = crop_b - diff_factor;
200        crop_h = crop_b - crop_y;
201
202        dst_b = fbHeight;
203        dst_h = dst_b - dst_y;
204    }
205}
206
207bool isExternalActive(hwc_context_t* ctx) {
208    return ctx->dpyAttr[HWC_DISPLAY_EXTERNAL].isActive;
209}
210
211int hwc_sync(hwc_context_t *ctx, hwc_display_contents_1_t* list, int dpy) {
212    int ret = 0;
213#ifdef USE_FENCE_SYNC
214    struct mdp_buf_sync data;
215    int acquireFd[4];
216    int count = 0;
217    int releaseFd = -1;
218    int fbFd = -1;
219    data.flags = MDP_BUF_SYNC_FLAG_WAIT;
220    data.acq_fen_fd = acquireFd;
221    data.rel_fen_fd = &releaseFd;
222    //Accumulate acquireFenceFds
223    for(uint32_t i = 0; i < list->numHwLayers; i++) {
224        if((list->hwLayers[i].compositionType == HWC_OVERLAY ||
225            list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) &&
226            list->hwLayers[i].acquireFenceFd != -1) {
227            acquireFd[count++] = list->hwLayers[i].acquireFenceFd;
228        }
229    }
230
231    if (count) {
232        data.acq_fen_fd_cnt = count;
233        fbFd = ctx->dpyAttr[dpy].fd;
234
235        //Waits for acquire fences, returns a release fence
236        ret = ioctl(fbFd, MSMFB_BUFFER_SYNC, &data);
237        if(ret < 0) {
238            ALOGE("ioctl MSMFB_BUFFER_SYNC failed, err=%s",
239                    strerror(errno));
240        }
241
242        for(uint32_t i = 0; i < list->numHwLayers; i++) {
243            if((list->hwLayers[i].compositionType == HWC_OVERLAY ||
244                list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET)) {
245                //Close the acquireFenceFds
246                if(list->hwLayers[i].acquireFenceFd > 0) {
247                    close(list->hwLayers[i].acquireFenceFd);
248                    list->hwLayers[i].acquireFenceFd = -1;
249                }
250                //Populate releaseFenceFds.
251                list->hwLayers[i].releaseFenceFd = dup(releaseFd);
252            }
253        }
254        list->retireFenceFd = releaseFd;
255    }
256#endif
257    return ret;
258}
259
260};//namespace
261